fix instrumentation of a standalone application (use of main instead of dllmain)
fix instrumentation of a standalone application (use of main instead of dllmain)

R=rogerm@chromium.org,chrisha@chromium.org

BUG=

Review URL: https://codereview.appspot.com/7325045

git-svn-id: db59699583a60be9a535cd09cdc9132301867226@1341 15e8cca8-e42c-11de-a347-f34a4f72eb7d

google/syzygy,sebmarchand/syzygy,google/syzygy,ericmckean/syzygy,supriyantomaftuh/syzygy,sebmarchand/syzygy,ericmckean/syzygy,pombreda/syzygy,pombreda/syzygy,wangming28/syzygy,ericmckean/syzygy,supriyantomaftuh/syzygy,google/syzygy,Eloston/syzygy,supriyantomaftuh/syzygy,wangming28/syzygy,wangming28/syzygy,google/syzygy,supriyantomaftuh/syzygy,sebmarchand/syzygy,pombreda/syzygy,sebmarchand/syzygy,wangming28/syzygy,pombreda/syzygy,ericmckean/syzygy,pombreda/syzygy,sebmarchand/syzygy,Eloston/syzygy,ericmckean/syzygy